Lee Yeong Oh, who is a genius neurosurgeon, is the best at what he does but because of an accident in his frontal lobe, he lacks sympathy for his patients and has erratic personalities. When a series of bizarre patient deaths occur at the hospital, police investigators converge around Yeong Oh. Rookie cop, Gye Jin Sung, who is a detective in the violent crimes division, is sent to investigate Yeong Oh.